'Gold mine': European police target secret phone network used by crime rings
https://www.reuters.com/article/us-netherlands-france-encryption/gold-mine-european-police-target-secret-phone-network-used-by-crime-rings-idUSKBN2431YV
An encrypted phone network widely used by thousands of criminals has provided police with a "gold mine" of information, leading to numerous arrests, drug seizures and even foiled assassination attempts, French and Dutch authorities said on Thursday.